CN114451022B

CN114451022B - Power adjustment method and device

Info

Publication number: CN114451022B
Application number: CN201980100850.XA
Authority: CN
Inventors: 管鹏; 张希
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2024-06-11
Anticipated expiration: 2039-09-30
Also published as: EP4027710A4; AU2019469004A1; CN114451022A; EP4027710A1; AU2019469004B2; WO2021062836A1; US20220225242A1

Abstract

A power adjustment method and device are used for increasing the stability of the transmission power of an uplink signal, so that the uplink signal can be effectively transmitted. The method comprises the following steps: receiving a MAC CE (201) for updating a path loss estimation reference signal; determining a path loss estimate from the path loss estimation reference signal (202); the effective time of the path loss estimated value is not later than n+x+t, where n is the time of sending feedback information, where the feedback information is used to feedback whether the MAC CE is correctly received, X is a fixed duration, and T is a variable duration. From the above, the effective time of the path loss estimation value is not later than n+x+t, so that the problem that the received power of the path loss estimation reference signal cannot be filtered for multiple times in a short time is avoided, so that the communication device can have enough time to filter the received power of the path loss estimation reference signal for multiple times, and the stability and accuracy of the determination of the path loss estimation value are ensured.

Description

Power adjustment method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a power adjustment method and apparatus.

Background

When the terminal device transmits an uplink signal to the network device, the terminal device may first determine the transmission power of the uplink signal. The method for determining the transmission power of the uplink signal includes: the terminal equipment carries out high-layer filtering on the received power of the path loss estimation reference signal sent by the network equipment to obtain the received power of the reference signal after high-layer filtering; then obtaining a path loss estimated value according to the high-layer filtered reference signal received power and the reference signal transmission power; and then obtaining the transmission power of the uplink signal according to the path loss estimated value.

The network device can configure the path loss estimation reference signal through related signaling, and then the terminal device estimates the path loss estimation value through the configured path loss estimation reference signal in a certain time.

However, in the above method, the transmission power of the uplink signal obtained by the terminal device is often unstable.

Disclosure of Invention

The embodiment of the application provides a power adjustment method and a device, which are used for improving the stability of the transmission power of an uplink signal so that the uplink signal can be effectively transmitted.

In a first aspect, an embodiment of the present application provides a power adjustment method, including: receiving a medium access layer control element (medium access control control element, MAC CE) for updating a path loss estimation reference signal; determining a path loss estimation value according to the path loss estimation reference signal; the effective time of the path loss estimated value is not later than n+X+T, n is the time for sending feedback information, the feedback information is used for feeding back whether the MAC CE is correctly received, X is a fixed duration, and T is a variable duration.

From the above, the effective time of the path loss estimation value is no later than n+X+T; that is, the communication device (such as a terminal device or a chip) avoids that the received power of the path loss estimation reference signal cannot be filtered for multiple times in a short time, so that the communication device has enough time to filter the received power of the path loss estimation reference signal (which can be understood as the received power of the reference signal) for multiple times, and determine the path loss estimation value; and the received power is obtained through multiple times of filtering, so that the stability and the accuracy of the determination of the path loss estimated value are improved.

In one possible implementation, the method further includes: and after the path loss estimated value takes effect, determining the transmitting power of the uplink signal according to the path loss estimated value.

Wherein, although the effective time of the path loss estimation value is not later than n+x+t, the time when the communication device uses the path loss estimation value to determine the transmission power of the uplink signal may not be earlier than n+x+t (at n+x+t or after n+x+t). That is, the communication device may determine the transmission power of the uplink signal according to the path loss estimation value when n+x+t, or the communication device may determine the transmission power of the uplink signal according to the path loss estimation value after n+x+t.

In the embodiment of the application, the stability and the accuracy of the determination result of the uplink signal transmitting power are improved by improving the stability and the accuracy of the path loss estimated value. It is understood that the uplink signal may include one or more of a Physical Random Access Channel (PRACH), a physical uplink control channel (physical uplink control channel, PUCCH), a Physical Uplink Shared Channel (PUSCH), a Sounding REFERENCE SIGNAL (SRS), a PUCCH demodulation reference signal (de-modulation REFERENCE SIGNAL, DMRS), a PUSCH-DMRS, or an uplink phase tracking reference signal (PHASE TRACKING REFERENCE SIGNAL, PTRS).

In one possible implementation, the method further includes: and after the path loss estimated value takes effect, transmitting the uplink signal with the transmission power.

In the embodiment of the application, the uplink signal is sent after the path loss estimated value takes effect, so that the uplink signal is stably and timely transmitted, and the stability of signal transmission is improved.

In a possible implementation manner, the T is related to network configuration information and/or capability information of a terminal device, and the capability information of the terminal device includes high-layer filtering capability information of the terminal device. The capability information of the terminal device is used for indicating the capability size of the terminal device, the terminal device needs to report the capability information of the terminal device to the network device, and the network device can configure related capability information for the terminal device according to the capability information of the terminal device. It may be understood that the capability information configured by the network device may be the same as or different from the capability information reported by the terminal device, which is not limited by the embodiment of the present application.

In the embodiment of the application, the T can be different according to the high-layer filtering capability information of different terminal equipment, so that the situation that different terminal equipment use the same time length is avoided, and therefore, a waiting time length can be generated by some terminal equipment, wherein the waiting time length can be understood as the time length that the road loss estimated value is determined by some terminal equipment but does not reach a specified time and the road loss estimated value needs to be waited for effectiveness; or some terminal devices have not effectively determined the path loss estimation value, but have not used the path loss estimation value which has not been effectively determined, so that the uplink signal cannot be stably transmitted.

In one possible implementation, the network configuration information includes at least one of: high-layer filtering configuration information, measurement times, measurement period, measurement setting or time domain information of the path loss estimation reference signal. I.e. information that is configured by the network device or that is predefined by the protocol.

In one possible implementation, the high-level filtering capability information includes at least one of: high-layer filtering configuration information, measurement times, measurement period, measurement setting or time domain information of the path loss estimation reference signal; the measurement times are the measurement times of the received power of the path loss estimation reference signal; the measurement period is a transmission period of the path loss estimation reference signal; the measurement setting is a setting related to the path loss estimation reference signal.

In one possible implementation, the t=number of measurements is the measurement period.

In one possible implementation, the MAC CE includes information of the path loss estimation reference signal.

In the embodiment of the application, the communication device can estimate the path loss estimation value according to the path loss estimation reference signal in the MAC CE by including the information of the path loss estimation reference signal, so that compared with the configuration of the path loss estimation reference signal by the radio resource control (radio resource control, RRC) signaling, the signaling overhead is reduced and the time delay is reduced.

In a possible implementation manner, the MAC CE further includes a parameter related to a transmission power of the uplink signal, where the parameter related to the transmission power of the uplink signal includes at least one of the following: target power, path loss compensation factor, or power adjustment parameter.

In the embodiment of the present application, the target power, the path loss compensation factor and the power adjustment parameter are parameters related to the transmission power.

In a possible implementation manner, the effective time of the parameter related to the transmission power of the uplink signal is no later than n+x; or the effective time of the parameter related to the sending power of the uplink signal is no later than n+X+T.

In the embodiment of the present application, after receiving the MAC CE, the communication device may determine the transmission power of the uplink signal by interpreting the parameter related to the transmission power included in the MAC CE, or may wait for the path loss estimation value to be determined, and then use the path loss estimation value and the determined path loss estimation value to determine the transmission power of the uplink signal. When the effective time of the parameter related to the transmission power is not later than n+x+t, the parameter related to the transmission power of the uplink signal may be updated synchronously with the path loss estimation value (i.e., the parameter is effective synchronously), so as to improve the accuracy of the transmission power of the uplink signal. And when the parameter related to the transmission power is not later than n+X, the time delay for adjusting the transmission power can be reduced.

In one possible implementation, the MAC CE includes information of a reference signal of an uplink transmission beam, and the path loss estimation reference signal is related to the reference signal of the uplink transmission beam.

In the embodiment of the present application, the MAC CE may include information of the reference signal of the uplink transmission beam, and by including information of the reference signal of the uplink transmission beam, the communication device may update the path loss estimation reference signal according to the reference signal of the uplink beam. That is, by the MAC CE, the communication apparatus can update not only the uplink transmission beam but also the path loss estimation reference signal, thereby reducing signal overhead and avoiding instructing the communication apparatus to adjust the path loss estimation reference signal and the uplink transmission beam, respectively, by a plurality of MAC CEs.

In one possible implementation, the method further includes: adjusting the uplink transmission beam according to the MAC CE; wherein the effective time of the uplink transmission beam is not later than n+X; or the effective time of the uplink transmission beam is no later than n+X+T.

In the embodiment of the application, the uplink transmission beam can be updated without performing high-layer filtering, and the high-layer filtering can be performed when the path loss estimated value is determined, so that the effective time of the uplink transmission beam can be consistent with or inconsistent with the effective time of the path loss estimated value. When the effective time of the uplink transmission beam is not later than n+x+t, the uplink transmission beam and the path loss estimation value can be updated synchronously (i.e., the uplink transmission beam and the path loss estimation value are in synchronous effect), so that the accuracy of the transmission power of the uplink signal is improved. And when the effective time of the uplink transmission beam is not later than n+X, the time delay can be reduced.

In one possible implementation, the MAC CE includes information of a reference signal of a downlink transmission beam, and the path loss estimation reference signal is related to the reference signal of the downlink transmission beam.

In the embodiment of the application, the downlink transmission beam is the downlink transmission beam of the downlink signal transmitted by the network equipment, and the downlink transmission beam is changed, i.e. the downlink transmission beam of the downlink signal transmitted by the network equipment is changed; thus, the downlink receiving beam corresponding to the downlink transmitting beam changes, and further the uplink transmitting beam changes, and further the transmitting power of the uplink signal can also be updated. That is, the MAC CE is used not only to update the downlink reception beam but also to update the uplink transmission beam and the path loss estimation reference signal, so that signal overhead is reduced, and the communication device is prevented from being instructed to adjust the downlink reception beam, the uplink transmission beam and the path loss estimation reference signal respectively by a plurality of MAC CEs.

In one possible implementation, the method further includes: adjusting an uplink transmission beam and a downlink reception beam according to the downlink transmission beam; wherein the effective time of the downlink receiving beam and the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam is not later than n+X, and the effective time of the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam and the uplink sending beam is not later than n+X.

In a second aspect, an embodiment of the present application provides a communication apparatus, including a processing unit and a receiving unit; the receiving unit is configured to receive a media access layer control element MAC CE, where the MAC CE is configured to update a path loss estimation reference signal; the processing unit is used for determining a path loss estimation value according to the path loss estimation reference signal; the effective time of the path loss estimated value is not later than n+X+T, n is the time for sending feedback information, the feedback information is used for feeding back whether the MAC CE is correctly received, X is a fixed duration, and T is a variable duration; and the processing unit is also used for determining the transmission power of the uplink signal according to the path loss estimated value.

In a possible implementation manner, the apparatus further includes a transmitting unit, configured to transmit the uplink signal at the transmission power after the path loss estimation value takes effect.

In a possible implementation, the T is related to network configuration information and/or capability information of the terminal device.

In a possible implementation manner, the effective time of the parameter related to the transmission power of the uplink signal is no later than n+x; or the effective time of the parameter related to the transmission power of the uplink signal is no later than n+X+T.

In a possible implementation manner, the processing unit is further configured to adjust the uplink transmission beam according to the MAC CE; wherein the effective time of the uplink transmission beam is not later than n+X; or the effective time of the uplink transmission beam is no later than n+X+T.

In a possible implementation manner, the processing unit is further configured to adjust an uplink transmission beam and a downlink reception beam according to the downlink transmission beam; wherein the effective time of the downlink receiving beam and the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam is not later than n+X, and the effective time of the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam and the uplink sending beam is not later than n+X.

In a third aspect, an embodiment of the present application provides a power adjustment method, including: and transmitting a media access layer control element (MAC CE) to the terminal equipment, wherein the MAC CE is used for updating the path loss estimation reference signal.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, including a transmitting unit configured to transmit a medium access layer control element MAC CE to a terminal device, where the MAC CE is configured to update a path loss estimation reference signal.

In a fifth aspect, embodiments of the present application provide a communication device including a processor and a memory for storing computer-executable instructions; the processor is configured to execute computer-executable instructions stored in the memory to cause the communication device to perform the corresponding method as shown in the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication apparatus including a processor and a memory for storing computer-executable instructions; the processor is configured to execute computer-executable instructions stored in the memory to cause the communication device to perform the corresponding method as shown in the third aspect.

In a seventh aspect, an embodiment of the present application provides a communication device, including a processor and an interface circuit for receiving code instructions and transmitting the code instructions to the processor; the processor executes the code instructions to perform the corresponding method as shown in the first aspect.

In an eighth aspect, an embodiment of the present application provides a communication device, the communication device including a processor and interface circuitry for receiving code instructions and transmitting to the processor; the processor executes the code instructions to perform the corresponding method as shown in the third aspect.

In a ninth aspect, an embodiment of the present application provides a communication device, including a processor, a memory, and a transceiver, where the transceiver is configured to receive signals or transmit signals; the memory is used for storing program codes; the processor is configured to invoke the program code from the memory to perform the method according to the first aspect.

In a tenth aspect, embodiments of the present application provide a communication device including a processor, a memory, and a transceiver for receiving signals or transmitting signals; the memory is used for storing program codes; the processor is configured to invoke the program code from the memory to perform the method according to the third aspect.

In an eleventh aspect, an embodiment of the present application provides a communication device comprising a processor, the method according to the first aspect being performed when the processor invokes a computer program in memory.

In a twelfth aspect, an embodiment of the present application provides a communication device, the communication device comprising a processor, the method according to the third aspect being performed when the processor invokes a computer program in memory.

In a thirteenth aspect, an embodiment of the present application provides a communication system, the communication system comprising a terminal device for performing the method according to the first aspect and a network device for performing the method according to the third aspect.

In a fourteenth aspect, embodiments of the present application provide a computer readable storage medium for storing instructions which, when executed, cause the method of the first aspect to be implemented.

In a fifteenth aspect, embodiments of the present application provide a computer readable storage medium for storing instructions which, when executed, cause the method of the third aspect to be implemented.

In a sixteenth aspect, embodiments of the present application provide a computer program product comprising instructions which, when executed, cause the method of the first aspect to be carried out.

In a seventeenth aspect, embodiments of the present application provide a computer program product comprising instructions which, when executed, cause the method of the third aspect to be implemented.

Drawings

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a power adjustment method according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an effective time provided by an embodiment of the present application;

fig. 4 is a schematic diagram of an uplink signal transmission time according to an embodiment of the present application;

fig. 5 is a schematic diagram of a signaling format according to an embodiment of the present application;

Fig. 6 is a schematic diagram of a signaling format provided in an embodiment of the present application;

Fig. 7a is a schematic structural diagram of a communication device according to an embodiment of the present application;

Fig. 7b is a schematic structural diagram of a communication device according to an embodiment of the present application;

Fig. 8a is a schematic structural diagram of a communication device according to an embodiment of the present application;

Fig. 8b is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

The terms first and second and the like in the description, in the claims and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

In the present application, "at least one (item)" means one or more, "a plurality" means two or more, "at least two (items)" means two or three and more, "and/or" for describing an association relationship of an association object, and three kinds of relationships may exist, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

First, a network architecture according to an embodiment of the present application will be described. Among other things, the communication system used in the present application may be understood as a wireless cellular communication system, or as a wireless communication system based on a cellular network architecture, etc. The power adjustment method provided by the application can be applied to various communication systems, for example, an internet of things (internet of things, ioT) system, a narrowband internet of things (narrow band internet of things, NB-IoT) system, a long term evolution (long term evolution, LTE) system, a fifth generation (5 th-generation, 5G) communication system, a hybrid architecture of LTE and 5G, a new wireless (NR) system of 5G, a new communication system in future communication development, and the like. The power adjustment method provided by the embodiment of the application can be adopted whenever the path loss estimated value needs to be determined in the communication system. Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application, and the scheme in the present application is applicable to the communication system. The communication system may include at least one network device, only one of which is shown, as the next generation base station (the next generation Node B, gNB) in the figure; and one or more terminal devices connected to the network device, such as terminal device 1 and terminal device 2 in the figure.

Wherein the network device may be a device capable of communicating with the terminal device. The network device may be any device having wireless transceiver capabilities including, but not limited to, a base station. For example, the base station may be an eNB or eNodeB (evolutional NodeB) in long term evolution (long term evolution, LTE), as well as a gNB, or a base station in a future communication system. Optionally, the network device may also be an access node, a wireless relay node, a wireless backhaul node, etc. in a wireless local area network (WIRELESS FIDELITY, wiFi) system. Optionally, the network device may also be a wireless controller in a cloud wireless access network (cloud radio access network, CRAN) scenario. Optionally, the network device may also be a wearable device or an in-vehicle device, etc. Optionally, the network device may also be a small station, a transmitting node (transmission reference point, TRP), or the like. It will be appreciated that the base station may also be a base station in a future evolved public land mobile network (public land mobile network, PLMN), or the like.

A terminal device, which may also be referred to as a User Equipment (UE), a terminal, etc. The terminal equipment is equipment with a wireless receiving and transmitting function, can be deployed on land, and comprises indoor or outdoor, handheld, wearable or vehicle-mounted; the device can also be deployed on the water surface, such as a ship, etc.; but may also be deployed in the air, for example on an aircraft, balloon or satellite, etc. The terminal device may be a mobile phone, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SELF DRIVING), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), or the like. It is understood that the terminal device may also be a terminal device in a future 5G network or a terminal device in a future evolved PLMN, etc.

Alternatively, in the communication system shown in fig. 1, the terminal device 1 and the terminal device 2 may also communicate through a device-to-device (D2D), vehicle-to-everything, V2X, or machine-to-machine (machine to machine, M2M) technology, and the communication method between the terminal device 1 and the terminal device 2 is not limited in the embodiment of the present application. It will be appreciated that in the communication system shown in fig. 1, the network device and the terminal device 1 may be configured to perform the power adjustment method provided by the embodiment of the present application, for example, the method shown in fig. 2 may be performed. In addition, the network device and the terminal device 2 may also be used to execute the power adjustment method provided in the embodiment of the present application.

Next, a calculation formula of the transmission power and a power adjustment method according to the embodiment of the present application will be described below.

In general, uplink communication refers in cellular network systems to a terminal device transmitting a signal to a network device, such as a base station, which may include one or more of an uplink signal or an uplink physical channel. For example, the signal may include one or more of a Physical Random Access Channel (PRACH), a physical uplink control channel (physical uplink control channel, PUCCH), a Physical Uplink Shared Channel (PUSCH), a Sounding REFERENCE SIGNAL (SRS), a PUCCH demodulation reference signal (de-modulation REFERENCE SIGNAL, DMRS), a PUSCH-DMRS, or an uplink phase tracking reference signal (PHASE TRACKING REFERENCE SIGNAL, PTRS). It is to be understood that the signal is not limited thereto, and the signal may be other types of uplink signals or uplink physical channels, etc., which are not limited by the embodiment of the present application.

Taking PUSCH as an example, the transmission power of the PUSCH may satisfy the following formula:

PL _b1,f1,c1(q_d1) is a path loss estimation value, and q _d1 is an identification of a reference signal used by the terminal device. That is, the path loss estimation value is a value estimated by the terminal device using the reference signal identified as q _d1. Specifically, the path loss estimation value is obtained by the transmission power of the reference signal and the reception power of the reference signal, the transmission power of the reference signal is notified to the terminal device by the network device, and the reception power of the reference signal is measured by the terminal device. It can be appreciated that the received power of the reference signal is the reference signal received power (REFERENCE SIGNAL RECEIVING power, RSRP) after higher layer filtering (commonly referred to as RSRP), i.e., the RSRP needs to be filtered by the terminal device according to multiple measurements.

Wherein, P _{PUSCH,b1,f1,c1}(i1,j1,q_d1, l 1) is a first transmission power, which is the determined transmission power of the signal; further, i1 is a transmission opportunity (transmission occasion) of PUSCH, and j1 isThe index of the element in the parameter set, q _d1 is the identification of the reference signal, l1 is the index (power control adjustment STATE WITH index) of the power control adjustment state of the PUSCH, b1 is the bandwidth part (BWP) of the PUSCH used by the terminal device, f1 is the carrier frequency used by the terminal device, and c1 is the serving cell of the terminal device. P _CMAX,f1,c1 (i 1) is the maximum transmit power of the terminal device at carrier frequency f1 of serving cell c 1.The target power of the terminal device, i.e. the target power value of the PUSCH at the network device, i.e. the power that the PUSCH is expected to reach when it arrives at the network device, is specifically understood to be the value that can be configured by the network device.Is the total bandwidth of PUSCH,/>Is a path loss compensation factor,/> For the compensation value of the path loss, Δ _TF,b1,f1,c1 (i 1) is a transmission power adjustment component of the PUSCH, f _b1,f1,c1 (i 1, l 1) represents a PUSCH power control adjustment state (power control adjustment state), and the network device can directly indicate whether the current PUSCH transmission power needs to be increased or decreased through downlink control information (downlink control information, DCI). It will be appreciated that the embodiment of the present application is not limited to the specific description of formula (1), and that other explanations of the parameters in formula (1) are possible, and will not be described here.

In general, the terminal device may be informed of the related operation through radio resource control (radio resource control, RRC) signaling, e.g., the terminal device may be informed of the update of the path loss estimation reference signal through RRC signaling. However, the RRC signaling is used to configure the relevant parameters for uplink transmit power control, which is time-delayed and has low flexibility, so faster signaling, such as MAC CE signaling, is required to implement the update of the relevant parameters. The terminal device may be instructed to update the path loss estimation reference signal, for example, by MAC CE signaling, which may be carried on a physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH). The effective time of the MAC CE signaling is that the terminal device can be within 3ms after sending the feedback information. That is, within 3ms after the terminal device feeds back the feedback information corresponding to the MAC CE to the network device, the terminal device needs to complete the following operations: the terminal equipment reads the MAC CE to obtain a new path loss estimation reference signal, measures the received power (namely RSRP, high-level filtered received power) of the path loss estimation reference signal according to the path loss estimation reference signal to obtain a path loss estimation value (also can be directly called as reference signal received power), and determines the transmission power of an uplink signal.

However, the number of times the terminal device measures RSRP is not large within 3ms, that is, samples required for the terminal device to perform filtering may not be large, that is, RSRP of higher layer filtering obtained by the terminal device is not large, which results in unstable uplink signal transmission power. Therefore, the embodiment of the application provides a power adjustment method, which can improve the stability of the uplink signal transmitting power and enable the uplink signal to be effectively transmitted.

Next, the power adjustment method provided by the embodiment of the present application will be described below by taking a communication device as an example of a terminal device.

Fig. 2 is a flow chart of a power adjustment method according to an embodiment of the present application, as shown in fig. 2, the power adjustment method includes:

201. the network device sends MAC CE signaling to the terminal device, the MAC CE signaling being used to update the path loss estimation reference signal.

The specific description of the MAC CE signaling may refer to the following description, which is not introduced here.

The path loss estimation reference signal may also be referred to as a path loss reference signal (pathloss reference), i.e. the terminal device may obtain a path loss estimation value according to the path loss estimation reference signal. Therefore, the specific name of the path loss estimation reference signal is not limited in the embodiment of the present application.

Optionally, the network device may send MAC CE signaling to the terminal device in any one or more of the following scenarios:

In the first scene, the network equipment detects that the relative positions of the terminal equipment and the network equipment are changed; the relative position of the terminal device and the network device is understood to mean that the position of the terminal device changes, for example, by taking the network device as a reference.

Scene two, the network equipment determines that the sending power of the uplink signal of the terminal equipment is too low or too high; when the transmission power of the uplink signal is too high, the terminal device may cause interference to other terminal devices; when the transmission power of the uplink signal is too low, the network device may not receive the uplink signal, or the network device may not correctly receive the uplink signal, and in this case, the terminal device may avoid the above situation by redetermining the transmission power of the uplink signal.

Scene three, the network device needs to switch the uplink receiving wave beam serving the terminal device; the uplink receiving beam is changed due to the change of the transmission of the uplink receiving beam, so that the terminal device can be matched with the uplink receiving beam in time by readjusting the transmission power of the uplink signal.

202. The terminal device receives the MAC CE signaling sent by the network device, and determines a path loss estimation value according to a path loss estimation reference signal (e.g., q _d1 in equation 1).

In the embodiment of the present application, the path loss estimation value may be PL _b1,f1,c1(q_d1 in the formula (1), where the path loss estimation value is obtained by using the transmission power of the path loss estimation reference signal and the received power of the path loss estimation reference signal after the high-level filtering, that is, the received power of the path loss estimation reference signal needs to be obtained through multiple high-level filtering. For example, the terminal device may perform an average process, a weighting process, or the like on the obtained high-layer filtered received power, which is not limited by the embodiment of the present application.

As an example, the reference signal received power obtained after the higher layer filtering may satisfy the following formula:

F_n＝(1-α)*F_n-1+α*M_n (2)

Wherein, F _n is the filtering result, i.e. the reference signal received power obtained after the nth filtering, F _n-1 is the reference signal received power obtained after the n-1 th filtering, and M _n is the measurement result of the n-th q _d1. It is understood that F ₀ may be M ₁ for the first filtering. In addition, α in equation (2) may satisfy α=1/2 ^(ki/4), where ki is a filter coefficient (filter coefficient) configured by the network device through RRC signaling.

203. And the terminal equipment determines the transmission power of the uplink signal according to the path loss estimated value.

Specifically, the terminal device may obtain the transmission power of the uplink signal according to a similar formula (1), and if the uplink signal is PUSCH, the terminal device may obtain the transmission power of the PUSCH according to the formula (1).

In another example, if the uplink signal is SRS, the transmission power of the SRS may satisfy the following formula:

For a specific description of formula (2), reference may be made to formula (1), and details thereof will not be described here.

In another example, if the uplink signal is PRACH, the transmission power of the PRACH may satisfy the following formula:

P_PRACH,b,f,c(i)＝min{P_CMAX,f,c(i),P_{PRACH,target,f,c}+PL_b,f,c} (4)

Wherein P _{PRACH,target,f,c} is the target power configured by the network device, PL _b,f,c uses by default the synchronization signal block (synchronization signal block, SSB) associated with the PRACH as the path loss estimation reference signal. However, in the embodiment of the present application, the path loss estimation reference signal used for determining the path loss estimation value of the PRACH is not limited to SSB, and may be the path loss estimation reference signal described in the embodiment of the present application (i.e., the path loss estimation reference signal indicated in the MAC CE signaling).

In another example, if the uplink signal is a PUCCH, the transmit power of the PUCCH may satisfy the following formula:

Wherein the last term g _b,f,c (i, l) is similar to the last term of equation (1), and will not be described in detail here. Δ _{F_PUCCH} (F) is the PUCCH-specific adjustment amount, and F is the PUCCH format.

It is understood that the formulas satisfied for the transmission power of other types of uplink signals may refer to formulas (1) - (4), and will not be described in detail herein. The other types of uplink signals may further include PUCCH-DMRS, PUSCH-DMRS, PTRS, and so on.

204. After the path loss estimation value takes effect, the terminal equipment transmits the uplink signal with the determined transmission power.

The effective time of the path loss estimated value is not later than n+x+t, where n is the time of sending feedback information, where the feedback information is used to feedback whether the MAC CE is correctly received, X is a fixed duration, and T is a variable duration.

In the embodiment of the present application, the effective time is not earlier than n+x and not later than n+x+t, which means that the terminal device may perform multiple high-level filtering in a time not earlier than n+x and not later than n+x+t to obtain the filtered reference signal received power. But at a time not earlier than n + X + T the terminal device may apply a path loss estimate or understand that the terminal device uses the path loss estimate to determine the transmit power of the uplink signal. That is, the terminal device can adjust uplink transmission power by using the path loss estimation reference signal indicated by the MAC CE to transmit the uplink signal. That is, after the path loss estimation value is validated, the terminal device may calculate the transmission power of the uplink signal using the new path loss estimation value. It should be noted that, the effective time may be n+x, n+x+t, or n+x+t, and the embodiment of the present application does not limit the division of the time node. And the time for the terminal device to apply the path loss estimation value may be n+x+t, or may be n+x+t.

Specifically, the time when the terminal device sends the feedback information may be understood as the time when the terminal device sends the feedback information, or may be understood as a slot (slot) when the terminal device sends the feedback information, or may be understood as a mini-slot when the terminal device sends the feedback information, or may be understood as an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol when the terminal device generates the feedback information, etc., and the embodiment of the present application is not limited to the time unit represented by n. Optionally, the n may be an uplink slot, and may also be a downlink slot corresponding to the uplink slot. It is understood that in case that the terminal device transmits a plurality of feedback information, the n may be a time or a slot of the last feedback information, etc.

As an example, as shown in fig. 3, where in n timeslots, the terminal device sends feedback information to the network device, the duration X may be the duration of the terminal device reading the MAC CE signaling, and in the terminal device reading the content of the MAC CE signaling, determining that the MAC CE signaling requires the terminal device to update the path loss estimation reference signal, so that the terminal device may measure according to the path loss estimation reference signal indicated by the MAC CE signaling, thereby obtaining the RSRP. It will be appreciated that the interpretation performed by the terminal device during the period X is only an example, and that other operations such as adjustment of the beam, adjustment of the panel, adjustment of the radio frequency, processing of the buffer, etc. may also be performed by the terminal device during the period X.

Optionally, since the transmission power of the uplink signal can be obtained after the path loss estimation value is validated, the validation time of the path loss estimation value can be equivalent to the validation time of the transmission power of the uplink signal. The feedback information may be understood as a hybrid automatic repeat request (hybrid automatic repeat request) message, i.e., the feedback information may indicate whether the MAC CE signaling is properly received by feeding back an Acknowledgement (ACK) or a Negative Acknowledgement (NACK) to the network device. The embodiment of the application is not limited to the specific format of the feedback information and the like.

For a specific description of X and T, one can see the following:

Wherein X is a fixed duration, for example, the X may be 3ms, and it is understood that the X is a fixed duration for the terminal device 1; but for different terminal devices, such as terminal device 1 and terminal device 2, again of variable duration, i.e. the X may differ for different terminal devices, but may be of fixed duration for the same terminal device. Alternatively, the X may be related to the capabilities of the terminal device, e.g., the terminal device may report X, which may include 1ms,2ms,3ms, etc. Optionally, when the unit of X is a slot, X is also related to the subcarrier spacing. For example, the subcarrier spacing is 15KHz, then X may be 3 slots; for another example, the subcarrier spacing is 120khz and x may be 24 slots. It will be appreciated that the corresponding absolute time is 3ms, although the slot values of the X are different. Optionally, the terminal device may also report different capabilities according to different subcarrier intervals. For example, if the subcarrier spacing is 15khz, x is 3 slots; if the subcarrier spacing is 120khz, x is 25 slots. It will be appreciated that in this case the absolute times represented by the two X's are different. Alternatively, the X may be the length of the uplink time slot (also may be understood as the number of uplink time slots), or the length of the downlink time slot (also may be understood as the number of downlink time slots), which is not limited as to whether the subcarrier spacing between the uplink time slot and the downlink time slot is the same. Alternatively, T may be the length of the uplink time slot, that is, the number of the uplink time slots, or the length of the downlink time slot, that is, the number of the downlink time slots, or the length of the absolute time, etc., which is not limited by how to measure the length of T.

It should be noted that, since the subcarrier spacing of the uplink transmission and the subcarrier spacing of the downlink transmission of the terminal device may be different, that is, the length of one uplink timeslot and the length of one downlink timeslot may be different, that is, the number of the uplink timeslot and the number of the downlink timeslot may be different. The terminal device can thus consider the conversion relationship between uplink and downlink slots when using the form n+x+t to acknowledge the time, or to acknowledge the conversion relationship between absolute time, e.g. milliseconds, and slot length. Alternatively, the formula may be applied after all scales to absolute time, e.g., all scales to milliseconds.

Optionally, the terminal device may further convert the time n+x+t into a downlink time slot and then apply the time n+x+t, because the terminal device measures the downlink signal according to the indication of the MAC CE signaling to estimate the path loss estimation value. An example of the scaling is as follows, if n is an uplink slot number, X is a time length counted in the number of uplink slots, T is a time length counted in the number of downlink slots, n is scaled to a downlink slot number, and X is scaled to a time length counted in the number of downlink slots.

The method of converting the uplink time slot z into the downlink time slot y can satisfy the following formula:

/>

Wherein the method comprises the steps of The whole symbol is rounded down. Mu _UL and mu _DL are uplink and downlink system parameter configurations, respectively. Similarly, the number of uplink timeslots is converted into a similar formula to which the number of downlink timeslots can also be referred. It is understood that y and z in equation (5) are merely examples.

Optionally, since the terminal device may also adjust the transmission power of the uplink signal according to the indication of the MAC CE signaling, the terminal device may also convert all the time n+x+t into the uplink time slot and then apply the time n+x+t. An example of the scaling is as follows, if n is an uplink time slot number, X is a time length counted in the number of uplink time slots, and T is a time length counted in the number of downlink time slots, then T is scaled to the time length counted in the number of uplink time slots.

Optionally, T may be a duration of high-layer filtering performed by the terminal device to obtain the received power of the path loss estimation reference signal, and the terminal device determines a sum of durations of the uplink signal transmission power according to the path loss estimation value. Optionally, the T is related to network configuration information and/or capability information of a terminal device, where the capability information of the terminal device includes high-layer filtering capability information of the terminal device. The capability information of the terminal device is used for indicating the capability size of the terminal device, and the terminal device needs to report the capability information of the terminal device to the network device. The high-layer filtering capability information of the terminal equipment comprises at least one of the following: high-layer filtering configuration information, measurement times, measurement period, measurement setting or time domain information of the path loss estimation reference signal. The measurement times are the measurement times of the received power of the path loss estimation reference signal; the measurement period is the transmission period of the path loss estimation reference signal; the measurement setting is a setting related to the path loss estimation reference signal. The network configuration information includes at least one of: high-layer filtering configuration information, measurement times, measurement period, measurement setting or time domain information of the path loss estimation reference signal. I.e. information that is configured by the network device or that is predefined by the protocol. It will be appreciated that the network configuration information is configured according to the high-level filtering capability information of the terminal device, and embodiments of the present application are not limited.

The higher-layer filtering configuration information includes an α filtering coefficient α=1/2 ^(ki/4), and ki is a filtering coefficient configured by the network device through RRC signaling (filter coefficient). The measurement times refer to the times of obtaining stable path loss estimated values predefined by a protocol or configured by a network or reported by terminal equipment and measuring path loss estimated reference signals, such as 1 time, 2 times, 3 times, 4 times and the like. The measurement period refers to a transmission period of a path loss estimation reference signal transmitted by network equipment predefined by a protocol or configured by a network or reported by terminal equipment and/or a measurement period of a terminal for measurement according to the path loss reference signal. Measurement settings refer to measurement related limitations, either protocol predefined or network configured or reported by the terminal device, including measurement time window (measurement window), discontinuous reception (discontinuous reception, DRX) configuration, etc. For example, if the measurement time window is W, the terminal device measurement behavior may be limited to one time window, for example, t=max (measurement number of times, measurement period, W). For another example, the period of discontinuous reception is T-DRX (i.e. the period of DRX), and thus the terminal device measurement behavior may not exceed one sleep period (discontinuous reception period) in order to avoid that the terminal device has not measured the path loss estimation reference signal received power yet and thus t=max (measurement number of times measurement period, TDRX). The time domain information of the path loss estimation reference signal may indicate whether the path loss reference signal is periodically transmitted, semi-continuously transmitted, or aperiodically transmitted. For example, if the reference signal is a non-periodically transmitted path loss, T is related to the trigger time of the non-periodically transmitted reference signal. The updating of the path loss estimation value can be performed after the transmission of the aperiodic reference signal, thereby enabling the terminal device to effectively measure the path loss estimation reference signal. Alternatively, one transmission and measurement of the aperiodic reference signal may be included between n+X and n+X+T. It will be appreciated that the description of the various information shown above is merely exemplary, and that various information may be defined otherwise in future communication systems or other fields, and embodiments of the present application are not limited in this respect.

Alternatively, T may also be associated with a scaling factor (scaling factor), e.g. a scaling factor determined from N and/or P. N is related to the number of received beams of the terminal device, or N can be directly configured by the network device and related to the type of the path loss estimation reference signal. For example, if the path loss estimation reference signal is SSB, n=8; for another example, the path loss estimation reference signal is CSI-RS, then n=1. Or N may also relate to whether the path loss estimation reference signal indicated by the MAC CE signaling belongs to the path loss estimation reference signal configured by RRC, for example, if the path loss estimation reference signal indicated by the MAC CE belongs to the path loss estimation reference signal configured by RRC, it indicates that the terminal device always maintains measurement on the path loss estimation reference signal and filters the measurement result, and n=0. P is the adjustment amount of the network device configuration, e.g., p=3. The scaling factor may mean the number of measurements in a measurement period, such as t=n×p.

In the embodiment of the application, the effective time of the path loss estimated value is not earlier than n+X and not later than n+X+T; that is, the terminal device avoids the problem that the received power of the path loss estimation reference signal cannot be filtered for multiple times in a short time, so that the terminal device can have enough time to filter the received power of the path loss estimation reference signal for multiple times and determine the path loss estimation value; the terminal equipment can determine the path loss estimated value in time, so that the stability of the determination of the path loss estimated value is improved.

For further understanding of the power adjustment method provided by the embodiment of the present application, a specific scenario will be described below, for example, the power adjustment method is described by taking an uplink signal as an SRS. It will be appreciated that the method steps of this specific scenario may refer to the description of the foregoing embodiments, and the details of the content of the MAC CE signaling will be described below, and the different steps performed by the terminal device will be caused as the content of the MAC CE signaling is different.

It is appreciated that the SRS's path loss estimation reference signals are generally configured in a hierarchy of SRS resource sets, that is, one or more SRS resources (SRS-resources) may be included in each SRS resource set (SRS-resourceset). Thus, each SRS resource may correspond to one path loss estimation reference signal, or each SRS resource set may correspond to one path loss estimation reference signal, and so on.

The first scene and the MAC CE signaling comprise information of the path loss estimation reference signal.

The MAC CE signaling may include an identifier of a path loss estimation reference signal, and the identifier of the path loss estimation reference signal may enable the terminal device to explicitly know which path loss estimation reference signal is used for estimating the path loss estimation value.

Optionally, the MAC CE signaling may further include carrier component (carrier component, CC) information and bandwidth part (BWP) information where the path loss estimation reference signal is located. The CC and BWP where the path loss estimation reference signal is located can enable the terminal device to know where the frequency domain location where the path loss estimation reference signal is located.

Optionally, in order to enable the terminal device to know which uplink signal is used by the path loss estimation value obtained according to the path loss estimation reference signal, the MAC CE signaling may further include an identifier of a target SRS resource or a target SRS resource set or a target SRS resource group, and the terminal device may be enabled to know that the path loss estimation value is used for an SRS resource in the SRS resource set through the identifier of the target SRS resource or the target SRS resource set or the target SRS resource group, or may be enabled to know which SRS resource set (which SRS resource group) the path loss estimation value is available for, so as to improve consistency of information interpretation. And the MAC CE signaling may further include CC information and BWP information where the target SRS resource or the target SRS resource set or the target SRS resource group is located, where the CC information and BWP information where the target SRS resource or the target SRS resource set or the target SRS resource group is located may enable the terminal device to learn a frequency domain location where the target SRS resource or the target SRS resource set or the target SRS resource group is located.

Note that, when the uplink signal is another signal, such as PUCCH, the MAC CE signaling may also include an identifier of the target PUCCH resource or the target PUCCH resource set or the target PUCCH resource group. Wherein, the description of the target SRS resource or the target SRS resource set or the target SRS resource group may be referred to for the related description of the target PUCCH resource or the target PUCCH resource set or the target PUCCH resource group. That is, the content included in the MAC CE may further include an identifier of a path loss estimation reference signal, CC information and BWP information where the path loss estimation reference signal is located, an identifier of the target PUCCH resource or the target PUCCH resource set or the target PUCCH resource group, and CC information and BWP information of the target PUCCH resource or the target PUCCH resource set or the target PUCCH resource group.

However, when the uplink signal is PUSCH, included in the MAC CE signaling is a mapping relationship of the sounding reference signal resource indicator code point (SRS resource indicator codepoint, SRI codepoint) to the path loss estimation reference signal. The terminal device may thereby determine the path loss estimation reference signal based on the MAC CE signaling and SRI codepoint in the downlink control information (downlink control information, DCI). It is understood that reference may be made to the foregoing embodiments for other content included in the MAC CE signaling, and this will not be described in detail herein.

Therefore, when the MAC CE signaling indicates that the path loss estimation reference signal corresponding to a certain uplink signal needs to be updated, the MAC CE signaling may include the identifier of the path loss estimation reference signal and the identifier of the certain uplink signal. Optionally, the CC information and BWP information where the path loss estimation reference signal is located, and the CC information and BWP information where the certain uplink signal is located may also be included.

Optionally, when the MAC CE signaling indicates that the path loss estimation reference signals corresponding to the at least two uplink signals need to be updated, the at least two uplink signals include, as an example, a first uplink signal and a second uplink signal, the path loss estimation reference signal corresponding to the first uplink signal is a first path loss estimation reference signal, and the path loss estimation reference signal corresponding to the second uplink signal is a second path loss estimation reference signal, where the MAC CE signaling may include an identifier of the first uplink signal, an identifier of the first path loss estimation reference signal, an identifier of the second uplink signal, and an identifier of the second path loss estimation reference signal. Optionally, the MAC CE signaling may further include CC information and BWP information where the first uplink signal is located, CC information and BWP information where the first path loss estimation reference signal is located, CC information and BWP information where the second uplink signal is located, and CC information and BWP information where the second path loss estimation reference signal is located. The embodiment of the present application is not limited as to how the MAC CE signaling indicates that the first path loss estimation reference signal corresponds to the first uplink signal and how the MAC CE signaling indicates that the second path loss estimation reference signal corresponds to the second uplink signal.

It is understood that a Logical Channel Identifier (LCID) may also be included in the MAC CE signaling header (header), where the LCID may be used to indicate that the MAC CE is used to update the path loss estimation reference signal. I.e. the terminal device can know what the function of the MAC CE signaling is, e.g. the terminal device can know that the MAC CE signaling is used for updating the path loss estimation reference signal.

In the embodiment of the application, the network equipment sends the MAC CE signaling to the terminal equipment, so that after the terminal equipment receives the MAC CE signaling, the network equipment can obtain an updated path loss estimation reference signal by reading the MAC CE signaling so as to estimate a path loss estimation value according to the new path loss estimation reference signal; therefore, the terminal equipment can obtain the path loss estimated value according to the path loss estimated reference signal, and after the path loss estimated value is validated, the transmitting power of the uplink signal is determined by using the path loss estimated value.

The embodiment of the application ensures that the terminal equipment has enough time to measure the path loss estimated value according to the updated path loss estimated reference signal, thereby determining the transmitting power of the uplink signal.

Optionally, the MAC CE signaling may further include a parameter related to the transmission power of the uplink signal, that is, the MAC CE signaling may include at least one of the following information besides the information of the path loss estimation reference signal: target power, path loss compensation factor, or power adjustment parameter. Wherein, taking formula (1) as an example, the MAC CE signaling can includeOr one or more of f _b1,f1,c1 (i 1, l 1). Taking equation (2) as an example, the MAC CE signaling may include/>Or one or more of f _b,f,c (i, l). It will be appreciated that reference is made to the foregoing embodiments for a specific description of the various parameters, which will not be described in detail here.

That is, the MAC CE signaling may include other parameters related to calculating the transmission power of the uplink signal, and the parameters related to the transmission power of the uplink signal may be other parameters, or may be other types of parameters, etc., which are not listed in the embodiments of the present application.

In the embodiment of the application, the network equipment sends the MAC CE signaling to the terminal equipment, so that after the terminal equipment receives the MAC CE signaling, the network equipment can obtain an updated path loss estimation reference signal by reading the MAC CE signaling so as to estimate a path loss estimation value according to the new path loss estimation reference signal; therefore, the terminal equipment can obtain the path loss estimated value according to the path loss estimated reference signal. As an example, the terminal device may determine the transmission power of the uplink signal according to the path loss estimation value (i.e., the path loss estimation value estimated by using the path loss estimation reference signal in the MAC CE signaling) and the parameter related to the transmission power of the uplink signal after the n+x+t time. As an example, referring to fig. 4, fig. 4 is a schematic view of an effective time provided by an embodiment of the present application. Since the parameters related to the transmission power of the uplink signal may not be subjected to higher layer filtering, after the terminal device decodes other parameters in the MAC CE signaling, the terminal device may determine the transmission power of the uplink signal as the first transmission power, before the effective time of the parameters related to the transmission power of the uplink signal (excluding the path loss estimation value) such as after the n+x time (may also include the time n+x). It can be understood that the estimated value of the path loss corresponding to the first transmission power is an old estimated value of the path loss, that is, the estimated value of the path loss estimated reference signal used by the terminal device before the network device does not send the MAC CE signaling. Further, the transmission power of the uplink signal is determined as the second transmission power within the effective time of the path loss estimation value, for example, after the n+x+t time (may also include the time n+x+t). The path loss estimated value corresponding to the second transmission power is a new path loss estimated value, that is, a path loss estimated value estimated by a path loss estimated reference signal in the MAC CE signaling sent by the network device.

The embodiment of the application ensures that the terminal equipment has enough time to measure the path loss estimated value according to the updated path loss estimated reference signal, thereby determining the transmitting power of the uplink signal; and the corresponding delay of the application time of the parameters related to the transmission power of the uplink signal is also considered.

The scenario shown above is that the path loss estimation reference signal is directly indicated by the MAC CE, but in a specific implementation, the MAC CE may not indicate the path loss estimation reference signal, but indicate the path loss estimation reference signal by other information, which may refer to scenario two and scenario three.

The second scenario, the MAC CE signaling includes information of the reference signal of the uplink transmission beam.

Wherein the MAC CE signaling may be used to indicate updating of the uplink transmit beam. Specifically, the MAC CE signaling may include an identification of a reference signal of an uplink transmission beam, and CC information and BWP information where the reference signal of the uplink transmission beam is located.

As an example, fig. 5 is a schematic format diagram of a MAC CE according to an embodiment of the present application, where each field represents the following meaning:

a/D: the field may be 1 bit in length, a1 may indicate activation, and a 0 may indicate deactivation. Specifically, when 1 is set, it may indicate that the MAC CE signaling is used to indicate updating the uplink transmission beam.

SRS resource set Cell ID (Cell ID): the length may be 5 bits and may represent the CC in which the SRS resource set is located. If the C field in fig. 5 is 0, the CC in which the resource represented by the resource ID in fig. 5 is located may also be represented.

SRS resource set BWP ID:2 bits, may represent BWP where the SRS resource set is located. If the C field in fig. 5 is 0, the BWP where the resource represented by the resource ID in fig. 5 is located may also be represented.

C: the length may be 1 bit; a1 value indicates the presence of the resource reservation cell IDi and resource BWP IDi fields in fig. 5, and a 0 value may indicate the absence.

SUL: the length may be 1 bit; a1 may represent SUL and a0 may represent NUL.

SP SRS resource set ID: the length may be 4 bits and may represent the ID of the target SRS resource set.

Fi: the length may be 1 bit and may represent the type of reference resource for the spatial relationship (spatial relationship). A set of 0 may represent that the resource IDi in the diagram represents an ID of an SRS resource or an SSB ID, and a set of 1 may represent that the resource IDi in the diagram represents an ID of a channel state information reference signal (channel status information REFERENCE SIGNAL, CSI-RS) resource. It will be appreciated that this field exists only when the a/D field is set to 1.

Resource IDi: the length may be 7 bits and may represent the identity of the reference resource of the spatial relationship. When Fi field is set to 0, the first bit of the resource IDi may be used to distinguish between SRS or synchronization signal blocks (synchronization signal block, SSB), and the last 6 bits may be the ID of the SRS resource or SSB ID. When Fi field is set to 1, 7 bits of the resource IDi are the ID of CSI RS resource. It will be appreciated that this field exists only when the a/D field is set to 1.

Resource reservation cell (resource SERVING CELL) IDi: the length may be 5 bits and may represent the CC in which the resource IDi is located.

Resource BWP IDi: the length may be 2 bits and may represent the BWP where the resource IDi is located.

R: a reserved field.

Further, the MAC CE signaling may include an identifier of whether to update the path loss estimation reference signal. Alternatively, the identity (i.e., the identity of whether to update the path loss estimation reference signal) may be 1-bit long. Alternatively, the 1 bit may be newly added 1 bit in the MAC CE signaling shown in fig. 5, or 1 bit in the R field or a combination of R fields in the 1 bit fig. 5. When the flag is 'yes', for example, when the associated field is set to 1, it indicates that the MAC CE is used to update the path loss estimation reference signal. When the flag is 'no', for example, the associated field is set to 0, it indicates that the MAC CE is not used to update the path loss estimation reference signal.

The MAC CE signaling may also include an identification of whether a path loss estimation reference signal is present. Alternatively, the identity (i.e., the identity of whether or not there is a path loss estimation reference signal) may be 1 bit long. Alternatively, the 1 bit may be added to the MAC CE signaling shown in fig. 5 by 1 bit, or the 1 bit may be 1 bit in the R field in fig. 5 or a combination of a plurality of R fields. When the flag is 'yes', for example, when the relevant field is set to 1, it indicates that the MAC CE contains the flag of the path loss estimation reference signal. When the identifier is 'no', for example, when the relevant field is set to 0, the identifier does not contain the identifier of the path loss estimation reference signal in the MAC CE, and in this case, the terminal device may update the path loss reference signal with reference to the reference signal of the spatial correlation.

It is understood that the identification of the path loss estimation reference signal may exist when the path loss estimation reference signal exists in the MAC CE signaling, that is, the identification of the path loss estimation reference signal may exist when the "identification of whether the path loss estimation reference signal exists" is yes in the MAC CE. Optionally, the MAC CE may include an identifier of 1 path loss estimation reference signal or identifiers of multiple path loss estimation reference signals. If the MAC CE includes the identification of 1 path loss estimation reference signal, it may indicate that the transmission power of all SRS resources in the SRS resource set corresponding to the SRS resource set ID indicated by the MAC CE may refer to the indicated path loss estimation reference signal. In another example, the MAC CE includes an identifier of a plurality of path loss estimation reference signals, which may indicate that the transmission power of all SRS resources in the SRS resource set corresponding to the SRS resource set ID indicated by the MAC CE may sequentially refer to the indicated plurality of path loss estimation reference signals. It can be appreciated that the correspondence between the path loss estimation reference signal and the SRS resource set shown above is merely an example, and in a specific implementation, other indication methods may also be referred to.

Alternatively, the path loss estimation reference signal may be included in the MAC CE in the following scenario, that is, the "identification of whether the path loss estimation reference signal exists" in the MAC CE in the following scenario is yes. As an example, the scenario in the MAC CE that includes the path loss estimation reference signal may include one or more of the following:

the reference signal of the spatial relationship (spatial relation) is an aperiodic reference signal. Since the measurement opportunity of the aperiodic reference signal may be one time, the aperiodic reference signal is not suitable for estimation of the path loss estimate. Optionally, a scenario in which the spatial relation is a semi-persistent reference signal may also be included.

The reference signals of the spatial relation of different SRS resources are different. If the path loss estimation reference signal of each SRS resource changes along with the reference signal change in the spatial correlation, it is possible to cause that the path loss estimation of different SRS resources is different, and finally, the transmission power of different SRS is different, thereby increasing the complexity of terminal device implementation and causing power imbalance between different transmission ports, so that the transmission power of multiple SRS resources in one SRS resource set can be kept consistent. Thus, in such a scenario, a path loss estimation reference signal for one half period (per) SRS resource set may be indicated.

The reference signal of the spatial relation is an uplink reference signal. The uplink reference signal cannot be used as a reference signal for path loss estimation. Thus, in such a scenario, the path loss estimation reference signal may be included in the MAC CE. Optionally, in this scenario, the terminal device may search for a spatial correlation of the uplink reference signal according to the configuration of the uplink reference signal, i.e. according to a 'chain rule', and always find a downlink reference signal, so as to use the downlink reference signal as a path loss estimation reference signal.

It can be understood that the path loss estimation reference signal relates to the reference signal of the uplink transmission beam, that is, the terminal device may perform RSRP (high-layer filtered received power) measurement according to the reference signal in the uplink transmission beam, so as to obtain the path loss estimation value. Optionally, the MAC CE signaling may further include an identification of the target SRS resource or the target SRS resource set. Optionally, the LCID may be included in the MAC CE signaling header (header). Wherein, the specific description of the identification of the LCID, the target SRS resource or the target SRS resource set refers to the foregoing embodiment, and will not be described in detail herein.

It can be understood that, when the uplink signal transmitted by the terminal device is PUSCH, the transmission beam of the PUSCH may be determined by the uplink transmission beam of the SRS resource indicated by the SRI in the DCI. Optionally, the transmission power of the PUSCH may be determined according to the SRI codepoint associated (or corresponding) path loss estimation reference signal in the DCI. That is, if the uplink transmission beam of the SRS resource indicated by the sounding reference signal resource indication (SRS resource indicator, SRI) in the DCI for scheduling the PUSCH changes, the uplink transmission beam of the PUSCH should change, and the path loss estimation reference signal for determining the PUSCH transmission power should also change accordingly. The MAC CE in scenario two may also include information indicating whether the MAC CE is also used to update the path loss estimation reference signal used to determine PUSCH transmit power. If so, the terminal device may use the uplink beam of the SRS resource indicated by the SRI to determine a path loss estimation reference signal of the PUSCH, and optionally, the effective time may be no later than n+X+T; if not, the terminal device may determine a path loss estimation reference signal of the PUSCH using a mapping relationship of SRI codepoint and the path loss estimation reference signal.

In the embodiment of the application, the network equipment transmits the MAC CE signaling to the terminal equipment, so that after the terminal equipment receives the MAC CE signaling, the terminal equipment can know to update the uplink transmission beam by reading the MAC CE signaling, and the terminal equipment can estimate the path loss estimated value according to the reference signal of the uplink transmission beam included in the MAC CE signaling; and updating the uplink transmission beam according to the MAC CE signaling. As an example, the terminal device may determine the transmission power of the uplink signal according to the path loss estimation value (i.e., the path loss estimation value estimated by using the reference signal of the uplink transmission beam in the MAC CE signaling) after the n+x+t time. And the terminal device may adjust the uplink transmission beam according to the uplink transmission beam indicated by the MAC CE signaling after the n+x+t time.

In the embodiment of the application, the network equipment simultaneously instructs the terminal equipment to update the uplink transmission beam and the path loss estimation reference signal by using the simplified signaling (namely the MAC CE signaling), namely the MAC CE signaling by indicating the uplink transmission beam, so that the terminal equipment is ensured to have enough time to measure the path loss estimation value according to the updated path loss estimation reference signal, and the transmission power of the uplink signal is further determined. And the corresponding delay of the application time of the uplink transmission beam indicated by the MAC CE is also considered.

And the third scene, the MAC CE signaling comprises the information of the reference signal of the downlink transmission beam.

Wherein the MAC CE signaling may be used to indicate the TCI (transmission configuration indicator) state of update activation. By indicating the active TCI state, updating of the uplink transmit beam and the downlink receive beam may be indicated indirectly, as well as updating of the path loss estimation reference signal. Specifically, the MAC CE signaling may include one or more active TCI states therein, or may include one or more inactive TCI states therein. For example, the network device may indicate the beam for data transmission with an active TCI state, whereby the terminal device may adjust the receive beam according to the active TCI state, whereby the terminal device may receive data.

Alternatively, the network device may activate one or more TCI states using MAC CE signaling, such as the signaling format shown in fig. 6. Where Ti represents the i-th TCI state configured in RRC, ti=1 means that this TCI state is activated, and ti=0 means that this TCI is deactivated. The network device sends the MAC CE may configure the terminal device with a list of active TCI states. The active TCI state means that measurement and maintenance are required for the TCI state terminal device, including maintaining the beam direction, the receiving weight, the time offset, the frequency offset, etc. corresponding to the TCI state.

Specifically, the terminal device may perform RSRP measurement according to the reference signal in the activated TCI. Alternatively, if there are multiple active TCIs, the terminal device may select one or more from the multiple active TCIs as the path loss estimation reference signal. It should be noted that, how the terminal device selects the embodiments of the present application is not limited, and may be selected according to, for example, an identification of a TCI state, or a result of measurement of a reference signal included in the TCI, or the like.

In the embodiment of the application, the network equipment transmits the MAC CE signaling to the terminal equipment, so that after the terminal equipment receives the MAC CE signaling, the network equipment knows that the network equipment needs to update the downlink transmission beam by reading the MAC CE signaling, and the terminal equipment can estimate the path loss estimated value according to the reference signal of the downlink transmission beam included in the MAC CE signaling; and adjusting the uplink transmission beam and the downlink reception beam according to the MAC CE signaling. As an example, the terminal device may determine the transmission power of the uplink signal according to the path loss estimation value (i.e., the path loss estimation value estimated by using the reference signal of the downlink transmission beam in the MAC CE signaling) after the time of n+x+t (or at the time of n+x+t). And the terminal device may adjust the uplink transmission beam and the downlink reception beam according to the downlink transmission beam indicated by the MAC CE signaling after the n+x+t time (or at n+x+t). It will be appreciated that due to the consistency of the transmit and receive beams, the terminal device may transmit uplink signals using the beam receiving the downlink signals.

It should be noted that, parameters related to the transmission power of the uplink signal, such as the target power, the path loss compensation factor, or the power adjustment parameter, may also be included in the MAC CE signaling in the second scenario and the third scenario, and for a specific implementation, reference is made to the foregoing embodiments, which will not be described in detail herein.

In the embodiment of the application, the network equipment simultaneously instructs the terminal equipment to update the uplink transmission beam, the downlink receiving beam and the path loss estimation reference signal by using the simplified signaling, namely the MAC CE signaling, so that the terminal equipment has enough time to measure the path loss estimation value according to the updated path loss estimation reference signal, and further the transmitting power of the uplink signal is determined. And simultaneously, the application time of the uplink transmission beam and the downlink reception beam corresponding to the downlink transmission beam indicated by the MAC CE is correspondingly delayed.

It will be appreciated that each of the above embodiments has an emphasis, and an implementation in one embodiment that is not described in detail may refer to other embodiments, which are not described herein in detail. Further, the embodiments described herein may be independent schemes or may be combined according to internal logic, and these schemes fall within the protection scope of the present application.

It should be understood that, in the foregoing embodiments of the methods and operations implemented by the terminal device, the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the terminal device, or the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the network device.

The above description has been mainly made on the schemes provided by the embodiments of the present application from the respective interaction points of view. It will be appreciated that the various network elements, such as terminal devices and network devices, in order to achieve the above-described functions, comprise corresponding hardware structures and/or software modules that perform the various functions. Those of skill in the art will appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the functional modules of the terminal equipment or the network equipment according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules described above may be implemented either in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The following description will be given by taking an example of dividing each function module into corresponding functions.

Finally, the communication device provided by the embodiment of the present application will be described in detail.

Fig. 7a is a schematic structural diagram of a communication device according to an embodiment of the present application, where the communication device may be a terminal device or a chip. The communication device is configured to perform the power adjustment method described in the embodiment of the present application, as shown in fig. 7a, and the communication device includes:

a receiving unit 701, configured to obtain a medium access layer control element MAC CE, where the MAC CE is configured to update a path loss estimation reference signal;

A processing unit 702, configured to determine a path loss estimation value according to the path loss estimation reference signal; the effective time of the path loss estimated value is not later than n+X+T, wherein n is the time for sending feedback information, the feedback information is used for feeding back whether the MAC CE is correctly received, X is a fixed duration, and T is a variable duration;

the processing unit 702 is further configured to determine a transmission power of the uplink signal according to the path loss estimation value.

In one possible implementation, the communication device further includes: a transmitting unit 703, configured to transmit the uplink signal with a transmission power after the path loss estimation value is validated.

In one possible implementation, the T is related to high-level filtering capability information of the terminal device.

In one possible implementation, the high-level filtering capability information includes at least one of: high-layer filtering configuration information, measurement times, measurement period, measurement setting or time domain information of the path loss estimation reference signal; the measurement times are the measurement times of the received power of the path loss estimation reference signal; the measurement period is the transmission period of the path loss estimation reference signal; the measurement setting is a setting related to the path loss estimation reference signal.

In one possible implementation, the information of the path loss estimation reference signal is included in the MAC CE.

In one possible implementation manner, the MAC CE further includes a parameter related to a transmission power of the uplink signal, where the parameter related to the transmission power of the uplink signal includes at least one of the following: target power, path loss compensation factor, or power adjustment parameter.

In one possible implementation, the validation time of the parameter related to the transmission power of the uplink signal is no later than n+x; or the effective time of the parameter related to the transmission power of the uplink signal is no later than n+x+t.

In a possible implementation manner, the processing unit 702 is further configured to adjust the uplink transmission beam according to the MAC CE; wherein the effective time of the uplink transmission beam is not later than n+X; or the effective time of the uplink transmission beam is no later than n+x+t.

In a possible implementation manner, the processing unit 702 is further configured to adjust an uplink transmission beam and a downlink reception beam according to the downlink transmission beam; wherein the effective time of the downlink receiving beam and the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam is not later than n+X, and the effective time of the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam and the uplink transmitting beam is no later than n+X.

It should be understood that when the communication apparatus is a terminal device or a component in a terminal device that implements the above functions, the processing unit 702 may be one or more processors, the transmitting unit 703 may be a transmitter, the receiving unit 701 may be a receiver, or the transmitting unit 703 and the receiving unit 701 may be integrated into one device, such as a transceiver. For example, the receiving unit 701 may receive a MAC CE transmitted by a network device, and the transmitting unit 703 may transmit the uplink signal with the determined transmission power of the uplink signal.

When the communication device is a chip, the processing unit 702 may be one or more processors, the transmitting unit 703 may be an output interface, the receiving unit 701 may be an input interface, or the transmitting unit 703 and the receiving unit 701 may be integrated into one unit, for example, an input/output interface, which is also referred to as a communication interface, an interface circuit, an interface, or the like.

It will be appreciated that reference may be made to the corresponding description of the previous embodiments for the implementation of the respective units shown in fig. 7 a.

Fig. 7b is a schematic structural diagram of a communication device according to an embodiment of the present application, where the communication device may be a network device or a chip. The communication device is configured to perform the power adjustment method described in the embodiment of the present application, as shown in fig. 7b, and the communication device includes:

a transmitting unit 710, configured to transmit a medium access layer control element MAC CE to a terminal device, where the MAC CE is used to update a path loss estimation reference signal.

It should be understood that when the above communication apparatus is a network device or a component in a network device that implements the above functions, the communication apparatus may further include a processing unit and a receiving unit, which are not shown in the figure. Wherein the processing unit may be one or more processors, the transmitting unit 710 may be a transmitter, the receiving unit may be a receiver, or the transmitting unit 710 and the receiving unit are integrated in one device, such as a transceiver.

When the communication device is a chip, the processing unit may be one or more processors, the sending unit 710 may be an output interface, and the receiving unit may be an input interface, or the sending unit 710 and the receiving unit are integrated into one unit, for example, an input/output interface, which is also referred to as a communication interface, an interface circuit, an interface, or the like.

It will be appreciated that reference may be made to the corresponding description of the previous embodiments for the implementation of the respective units shown in fig. 7 b.

Fig. 8a shows a communication device 80 according to an embodiment of the present application, which is configured to implement the functions of the terminal device in the above method. When the function of the terminal device is implemented, the device may be the terminal device, or may be a device in the terminal device, or may be a device that can be used in a matching manner with the terminal device. The device may also be a chip system. In the embodiment of the application, the chip system can be formed by a chip, and can also comprise the chip and other discrete devices. The apparatus 80 includes at least one processor 820 for implementing the functions of the terminal device in the method provided by the embodiment of the present application. The apparatus 80 may also include a communication interface 810. In an embodiment of the application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, the communication interface 810 may be used for devices in the apparatus 80 to communicate with other devices. Processor 820 receives and transmits data using communication interface 810 and is configured to implement the methods described in the method embodiments above.

The apparatus 80 may also include at least one memory 830 for storing program instructions and/or data. Memory 830 is coupled to processor 820. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. Processor 820 may operate in conjunction with memory 830. Processor 820 may execute program instructions stored in memory 830. At least one of the at least one memory may be included in the processor.

The specific connection medium between the communication interface 810, the processor 820, and the memory 830 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 830, the communication interface 820 and the communication interface 810 are connected through the bus 840 in fig. 8a, and the bus is indicated by a thick line in fig. 8a, and the connection manner between other components is only schematically illustrated, but not limited thereto. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in FIG. 8a, but not only one bus or one type of bus.

When the apparatus 80 is embodied as a chip or a system-on-chip, the communication interface 810 may output or receive baseband signals. When the apparatus 80 is embodied as a device, the communication interface 810 may output or receive radio frequency signals. In the embodiment of the present application, the processor may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution.

As an example, fig. 8b is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application. The terminal device may perform the method as shown in fig. 2 or the terminal device may perform the operation of the terminal device as shown in fig. 7 a.

For ease of illustration, fig. 8b shows only the main components of the terminal device. As shown in fig. 8b, the terminal device 800 includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output means. The processor is mainly used for processing communication protocols and communication data, controlling the whole terminal equipment, executing software programs, and processing data of the software programs, for example, for supporting the terminal equipment to execute the flow described in fig. 2. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. The terminal device 800 may also include input and output means, such as a touch screen, display screen, keyboard, etc., primarily for receiving data entered by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When the terminal device is started, the processor can read the software program in the storage unit, interpret and execute the software program, and process the data of the software program. When data is required to be transmitted wirelessly, the processor carries out baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then transmits the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

Those skilled in the art will appreciate that fig. 8b shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or storage device, etc., and embodiments of the present application are not limited in this respect.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. As an alternative implementation, the processor may include a baseband processor and a central processing unit (central processing unit, CPU), where the baseband processor is mainly used to process the communication protocol and the communication data, and the CPU is mainly used to control the whole terminal device, execute a software program, and process the data of the software program. Optionally, the processor may also be a network processor (network processor, NP) or a combination of CPU and NP. The processor may further comprise a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (FPGA) GATE ARRAY, generic array logic (GENERIC ARRAY logic, GAL), or any combination thereof. The memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM), an electrically erasable programmable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (double DATA RATE SDRAM, DDR SDRAM), enhanced SDRAM (ENHANCED SDRAM, ESDRAM), DRAM (synchronous DRAM), The dynamic random access memory (SYNCHLINK DRAM, SLDRAM) and the direct memory bus random access memory (direct rambus RAM, DR RAM) are synchronously connected. It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

For example, in the application embodiment, the antenna and the radio frequency circuit with the transceiver function may be regarded as the transceiver unit 801 of the terminal device 800, and the processor with the processing function may be regarded as the processing unit 802 of the terminal device 800.

As shown in fig. 8b, the terminal device 800 may comprise a transceiving unit 801 and a processing unit 802. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. Alternatively, the device for implementing the receiving function in the transceiver unit 801 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 801 may be regarded as a transmitting unit, that is, the transceiver unit 801 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitting circuit, etc.

In some embodiments, the transceiver unit 801 and the processing unit 802 may be integrated into one device or may be separated into different devices, and furthermore, the processor and the memory may be integrated into one device or may be separated into different devices. For example, in one embodiment, the transceiver unit 801 may be configured to perform the method illustrated in step 201 of fig. 2. As another example, in one embodiment, the transceiver unit 801 may also be used to perform the method shown in step 204 of fig. 2.

In one embodiment, the processing unit 802 may also be used to perform the methods shown at 202 and 203 in fig. 2.

As another example, in one embodiment, the transceiver unit 801 may also be used to perform the methods shown by the transmitting unit 703 and the receiving unit 701. As another example, in one embodiment, processing unit 802 may also be used to perform the methods illustrated by processing unit 702.

When the communication device in the embodiment of the present application is a terminal device, reference may also be made to the device shown in fig. 9. The apparatus includes a processor 910, a transmit data processor 920, and a receive data processor 930. The processing unit 702 in the above embodiment may be the processor 910 in fig. 9 and perform the corresponding functions. The receiving unit 701 in the above-described embodiment may be the received data processor 930 in fig. 9, and the transmitting unit 703 may be the transmitted data processor 920 in fig. 9. Although a channel encoder, a channel decoder are shown in fig. 9, it is to be understood that these modules are not limiting illustrations of the present embodiment, but are merely schematic.

It can be understood that, the implementation manner of the terminal device in the embodiments of the present application may refer to the foregoing embodiments specifically, and will not be described in detail herein.

It will be appreciated that according to the method provided by an embodiment of the present application, the present application also provides a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of the embodiment shown in fig. 2. Further, the computer may be caused to perform the method shown in fig. 2 according to various scenarios provided by embodiments of the present application.

According to the method provided by the embodiment of the present application, the present application further provides a computer readable medium storing program code, which when executed on a computer, causes the computer to perform the method in the embodiment shown in fig. 2. Further, the computer may be caused to perform the method shown in fig. 2 according to various scenarios provided by embodiments of the present application.

According to the method provided by the embodiment of the application, the application also provides a system which comprises the terminal equipment and the network equipment.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a solid-state disk (solid-state drive STATE DISC, SSD)), or the like.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of power adjustment, the method comprising:

receiving a media access layer control element (MAC CE) which is used for updating a path loss estimation reference signal;

determining a path loss estimation value according to the path loss estimation reference signal; the effective time of the path loss estimated value is not later than n+X+T, n is the time for sending feedback information, the feedback information is used for feeding back that the MAC CE is correctly received, X is a fixed duration, T is a variable duration, and T is related to high-level filtering capability information of terminal equipment;

and determining the transmitting power of the uplink signal according to the path loss estimated value.

2. The method according to claim 1, wherein the method further comprises:

and after the path loss estimated value takes effect, transmitting the uplink signal with the transmission power.

3. The method of claim 1, wherein the high-level filtering capability information comprises at least one of: high-layer filtering configuration information, measurement times, measurement period, measurement setting or time domain information of the path loss estimation reference signal;

The measurement times are the measurement times of the received power of the path loss estimation reference signal; the measurement period is a transmission period of the path loss estimation reference signal; the measurement setting is a setting related to the path loss estimation reference signal.

4. A method according to claim 3, wherein T is a duration corresponding to the higher layer filtering performed by the terminal device, and the terminal device determines a sum of durations of transmission power of the uplink signal according to the path loss estimation value.

5. The method of any of claims 1-4, wherein the path loss estimate is validated no earlier than n+x.

6. The method according to any of claims 1-4, wherein the MAC CE includes information of the path loss estimation reference signal.

7. The method of claim 6, wherein the MAC CE further includes a parameter related to a transmission power of the uplink signal, and wherein the parameter related to the transmission power of the uplink signal includes at least one of: target power, path loss compensation factor, or power adjustment parameter.

8. The method of claim 7, wherein the parameter related to the transmit power of the uplink signal has an effective time no later than n+x; or the effective time of the parameter related to the sending power of the uplink signal is no later than n+X+T.

9. The method according to any of claims 1-4, wherein the MAC CE includes information of a reference signal of an uplink transmission beam, and wherein the path loss estimation reference signal is related to the reference signal of the uplink transmission beam.

10. The method according to claim 9, wherein the method further comprises:

adjusting the uplink transmission beam according to the MAC CE; wherein the effective time of the uplink transmission beam is not later than n+X; or the effective time of the uplink transmission beam is no later than n+X+T.

11. The method according to any of claims 1-4, wherein the MAC CE includes information of a reference signal of a downlink transmission beam, and wherein the path loss estimation reference signal is related to the reference signal of the downlink transmission beam.

12. The method of claim 11, wherein the method further comprises:

Adjusting an uplink transmission beam and a downlink reception beam according to the downlink transmission beam; wherein the effective time of the downlink receiving beam and the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam is not later than n+X, and the effective time of the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam and the uplink sending beam is not later than n+X.

13. A communication device, the communication device comprising:

A receiving unit, configured to receive a medium access layer control element MAC CE, where the MAC CE is configured to update a path loss estimation reference signal;

the processing unit is used for determining a path loss estimation value according to the path loss estimation reference signal; the effective time of the path loss estimated value is not later than n+X+T, n is the time for sending feedback information, the feedback information is used for feeding back that the MAC CE is correctly received, X is a fixed duration, T is a variable duration, and T is related to high-level filtering capability information of terminal equipment;

And the processing unit is also used for determining the transmission power of the uplink signal according to the path loss estimated value.

14. The apparatus of claim 13, wherein the apparatus further comprises:

And the transmitting unit is used for transmitting the uplink signal with the transmitting power after the path loss estimated value is effective.

15. The apparatus of claim 13, wherein the high-level filtering capability information comprises at least one of: high-layer filtering configuration information, measurement times, measurement period, measurement setting or time domain information of the path loss estimation reference signal;

16. The apparatus of claim 15, wherein T is a duration corresponding to the higher layer filtering performed by the terminal device, and the terminal device determines a sum of durations of transmission power of the uplink signal according to the path loss estimation value.

17. The apparatus of any of claims 13-16, wherein the path loss estimate is validated no earlier than n+x.

18. The apparatus according to any of claims 13-16, wherein the information of the path loss estimation reference signal is included in the MAC CE.

19. The apparatus of claim 18, wherein the MAC CE further includes a parameter related to a transmission power of the uplink signal, and wherein the parameter related to the transmission power of the uplink signal includes at least one of: target power, path loss compensation factor, or power adjustment parameter.

20. The apparatus of claim 19, wherein the parameter related to the transmit power of the uplink signal has an effective time no later than n+x; or the effective time of the parameter related to the sending power of the uplink signal is no later than n+X+T.

21. The apparatus according to any of claims 13-16, wherein the MAC CE includes information of a reference signal of an uplink transmission beam, and wherein the path loss estimation reference signal is related to the reference signal of the uplink transmission beam.

22. The apparatus of claim 21, wherein the device comprises a plurality of sensors,

The processing unit is further configured to adjust the uplink transmission beam according to the MAC CE; wherein the effective time of the uplink transmission beam is not later than n+X; or the effective time of the uplink transmission beam is no later than n+X+T.

23. The apparatus according to any of claims 13-16, wherein the MAC CE includes information of a reference signal of a downlink transmission beam, and wherein the path loss estimation reference signal is related to the reference signal of the downlink transmission beam.

24. The apparatus of claim 23, wherein the device comprises a plurality of sensors,

The processing unit is further configured to adjust an uplink transmission beam and a downlink reception beam according to the downlink transmission beam; wherein the effective time of the downlink receiving beam and the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam is not later than n+X, and the effective time of the uplink transmitting beam is not later than n+X+T; or the effective time of the downlink receiving beam and the uplink sending beam is not later than n+X.

25. A communication device comprising a processor, a memory, and a transceiver;

the transceiver is used for receiving signals or transmitting signals;

the memory is used for storing program codes;

the processor being operative to invoke the program code from the memory to perform the method of any of claims 1 to 12.

26. A communication device comprising a processor and an interface circuit;

The interface circuit is used for receiving code instructions and transmitting the code instructions to the processor; the processor executes the code instructions to perform the method of any one of claims 1 to 12.

27. A computer readable storage medium for storing instructions which, when executed, cause the method of any one of claims 1 to 12 to be implemented.

28. A computer program product comprising instructions which, when executed, cause the method of any one of claims 1 to 12 to be implemented.